The Harken 40 mm Carbo FiddleBlock line
features high-load ball bearings with fitted races for low-friction operation.
The Harken 40
mm Carbo
Fiddle is an excellent choice for 3:1 and 4:1 tackles on dinghy vangs
and mainsheets, as well as for controls such as cunninghams and internal boom
outhauls on larger boats.